Ventilating grill



1954 K. J. G. BROBERG VENTILATING GRILL 2 SheetsSheet 1 Filed July 12, 1952 Aug. 31, 1954 J. 5. BROBERG VENTILATING GRILL 2 Sheets-Sheet 2 Filed July 12, 1952 Q N/i/J VHNQ I I UI IH IHN I I I HI I I I II IHHWUIHMHHHHIHWHHHHWIHHHH m 9 Patented Aug. 31, 1954 UNITED STATES PATENT OFFICE VEN TILATIN G GRILL Karl Johan Georg Broberg, :S olna, Sweden, assignor to AB Svenska Flaktfabriken, Stockhohn, Sweden Application July 12, 1952, SlialNO. 298,523 Claims priority, applieation sweden July 12, 1951 5 Claims.

This invention relates to new and useful improvements in shutter-type ventilating grills.

More particularly, the invention relates to a novel drawings, in which:

Fig. 1 is a front elevational View of aventilating grill embodying the present invention;

Fig. 2 is a rear elevational view of the grill illustrated in Fig. 1, a part of the cover bracket being broken away to better illustrate certain details of the construction;

Fig. 3 is a sectional View on line 3-3, Fig. 2 Fig. 4 is a sectional view on line 4-4, Fig. 2; and

Referring to the drawings, referencejnumeral I designates the frame of a ventilating grill havsurfaces of the opening 0-, for example, as shown in Fig. 3 of the drawings. The frame carries the usual gasket It to provide a seal between the frame I and wall surface W.

In each grill opening la there is mounted a pair of shutters 2 which extend longitudinally throughout the length or height of the grill opening, the shutters 2 of each pair being adapted to ably seated in recesses Hb in the top and bottom portions ll of the frame I. The portion of the shutter 2 through which the pin 9 extends is relaftively thicker than the remaining portion of the shutter which recessed atone'side as indicated at 3' to provide a shoulder siiiface 3ii at right purpose that will later appear.

. v 2 angles to the general plane of the shutter 'for' a Asshown in" the tended and retracted positions to open and close To this end there length of the shutter. As shown most clearly in Fig. i ofthe drawings, the groove 8 in each zontally and vertically spaced projecting guide elements 6 on the members l3 and serve to retain the latter engaged in the grooves 8 while permitting free sliding movement of said members I 3 longitudinally of the shutters 2 and flanges "dot.

shutters wi11be m ffuuy" retracted relation with respec'tjt'o the rram'efopemngla the'm'embe in fully extended relation with respect to the frame opening la, as shown at the right in Fig. 5, when the member I3 is at the lower limit of its travel in the grooves 8.

In the embodiment of the invention shown in the drawings the adjacent pairs of shutters 2 are intended to be opened and closed simultaend the grooves 8 in the left hand pair of shutters on Fig. 4 are convergent in the opposite direction from the grooves 8 in the right hand pair of shutters and the members are actuated in respectively opposite directions by a single pull cord 14 which is connected to both actuator members 13 and has its intermediate portion extending from one pair of shutters to the other as shown in said Fig. 4. More particularly, the intermediate and free end portions of the pull cord It extend through guide passages Ila and H formed in the top and bottom portions II, respectively, of the frame I and the bracket 4 includes top corner portions 4b which cover the guide passage Hot in the frame top portions H to prevent displacement of the pull cord I l. The ends of the cord hang suspended below the frame l as shown and knobs 15 to facilitate actuation of the pull cord may be provided.

By virtue of the construction and arrangement of the shutter grooves 3, actuator members l3 and common pull cord, it will be observed with reference to Fig. 4 of the drawings that when the right hand end of cord M is pulled downwardly the actuator members 13 for the right and left hand pairs of shutters will be actuated downwardly and upwardly, respectively, to cause the shutters 2 of both pairs thereof to be retracted thereby opening the grill opening la. Conversely, when the left hand end of the cord I4 is pulled downwardly the members [3 are actuated in the reverse directions to pivot the shutters 2 of each pair outwardly to their relatively extended positions and thereby close the grill opening la.

While a particular embodiment of the invention has been illustrated and described herein it is not intended that the invention be limited to such disclosure and changes and modifications may be made within the scope of the following claims.

I claim:

1. A ventilating grill comprising a frame having an opening therein, a pair of shutters pivot ally mounted centrally in frame and extending the full length of the opening, the shutters of said pair being individually mounted for pivotal movement in respectively opposite directions and disposed with respect to each other so that in the relatively extended and retracted positions thereof the grill opening is closed and opened, respectively, said shutters each having an angularly extending groove therein and the grooves in the pair of shutters being disposed in divergent-convergent relation longitudinally thereof, and an actuator member slidably mounted in the grooves of said pair of shutters operable upon movement of the member longitudinally of the shutters in the direction of divergence of said grooves to retract said shutters and upon movement in the direction of convergence of the grooves to extend the shutters.

2. A ventilating grill comprising a frame having an opening therein, a pair of shutters pivotally mounted centrally in said opening in the frame and extending the full length of the opening, the shutters of said pair being individually mounted for pivotal movement in respectively said opening in the ters and upon movement in the with respect to each other so that in opposite directions and disposed with respect to each other so that in the relatively extended and retracted positions thereof the grill opening is closed and. opened, respectively, said shutters each having an angularly extending groove therein and the grooves in the pair of shutters being disposed in divergent-convergent relation longitudinally thereof, an actuator member slidably mounted in the grooves of said pair of shutters operable upon movement of the member longitudinally of the shutters in the direction of divergence of said grooves to retract said shutters and upon movement in the direction of convergence of the grooves to extend the shutters, and means to actuate said actuator member.

3. A ventilating grill comprising a frame having at least two parallel spaced openings therein, a pair of shutters pivotally mounted centrally in each opening in the frame and extending the full length of the opening, the shutters of each pair being individually mounted for pivotal movement in respectively opposite directions and disposed the relatively extended and retracted positions thereof the grill openings are closed and opened respectively, said shutters each having an angularly extending groove therein and the grooves in the shutters of each pair thereof being disposed in divergent-convergent relation longitudinally of the shutters with the grooves in adjacent pairs of shutters being divergent-convergent in respectively opposite directions, and an actuator member slidably mounted in the grooves of each pair of shutters operable upon movement of the member longitudinally of the shutters in the direction to retract said shutdirection of convergence of the grooves to extend the shutters.

4. A ventilating grill comprising a frame having at least two of divergence of said grooves parallel spaced openings therein, a pair of shutters pivotally mounted centrally in each opening in the frame and extending the full length of the opening, the shutters of each pair being individually mounted for pivotal movement in respectively opposite directions and disposed with respect to each other so that in the relatively extended and retracted positions thereof the grill openings are closed and opened respectively, said shutters each having an angularly extending groove therein and the grooves in the shutters of each pair thereof being disposed in divergentconvergent relation longitudinally of the shutters with the grooves in adjacent pairs of shutters being divergent-convergent in respectively opposite directions, an actuator member slidably mounted in the grooves of each pair of shutters operable upon movement of the member longitudinally of the shutters in the direction of divergence of said grooves to retract said shutters and upon movement in the direction of convergence of the grooves to extend the shutters, and means to actuate said actuator members.

5. A ventilating grill comprising a frame having at least two parallel spaced openings therein, a pair of shutters pivotally mounted centrally in each opening in the frame and extending the full length of the opening, the shutter of each pair being individually mounted for pivotal movement in respectively opposite directions and disposed with respect to each other so that in the relatively extended and retracted positions thereof the grill openings are closed and opened respectively, said shutters each having an angularly extending groove therein and the grooves in the shutters of each pair thereof being disposed in divergentconvergent relation longitudinally of the shutters one pair of shutters and operable to efiect simulwith the grooves in adjacent pairs of shutters taneous movement of said actuator members in being divergent-convergent in respectively opporespectively opposite directions and cause extensite directions, an actuator member slidably sion and retraction of the pairs of shutter in mounted in the grooves of each pair of shutters 5 unison.

tudinally of the shutters in the direction of diver- Referencfls Cited in the fi Of s p e gence of said grooves to retract said shutters and UNITED STATES PATENTS upon movement in the direction of convergence b N D t of the grooves to extend the shutters, and a com- 10 gz i R mm M 91944 mon pull cord having parallel portions thereof eece secured respectively to the actuator member of 

